SendPushNotificationJobNotificationArg

First keyword argument to SendPushNotificationJob#perform(notification:, target:). Not returned by GET /api/v1/notifications (persisted rows have no data column; FCM data is only on the push payload).

{
    "title": "string",
    "body": "string",
    "data": {
        "property1": "string",
        "property2": "string"
    }
}